To give you an idea down here in Florida I have one for sale in a 55+ community. It is not an 2004 but it is completely gutted to the frame and fully remodeled like a house.
New plumbing, sub-floors, completely drywalled including ceilings and ceramic floors.
It is 2 bed 2 bath with walkin jacuzzi tub and his / her sinks in master bath.
Kitchen is granite with built in wine cooler.
Outdoor screened sunroom is ceramic with tiki bar.
Backyard has hot tub with all plumbing and electric underground.
We are selling it for 23,000$ and that includes the essentials (side by side fridge, stove, dishwasher, washer, etc.
Having been around many mobile homes my advice to you is to look around and remember newer does not always mean its better. Watch out for soft or hard panel walls and carpet.